InKeyIndex Implementation testing | More than anticipated queries to RETS

We are updating our solution where the queries for pulling the MLS Data from the server will be optimized ensuring minimal load to the server.
To test the solution, we anticipate more than normal querying in approximately 5 times/day for a 15-min window between 10:00AM to 3:00PM for 5 days. We will be querying for Listing Key records instead of complete listings; we are implementing the InKeyIndex in our logic.
Please provide your approval so that we can proceed with this activity.